<template>
    <div class="cover-upload">
        <el-upload name="file" :show-file-list="false" accept=".png,.PNG,.jpg,.JPG,.jpeg,.JPEG,.gif,.GIF,.bmp,.BMP"
            multiple="false" :http-request="uploadImage">
            <div class="cover-upload-btn">
                <template v-if="localFile">
                    <img :src="localFile">
                </template>
                <template v-else>
                    <img :src="(imageUrlPrefix ? imageUrlPrefix : proxy.globalInfo.imageUrl) + modelValue.imageUrl"
                        v-if="modelValue && modelValue.imageUrl">
                    <span class="iconfont icon-add" v-else></span>
                </template>
            </div>

        </el-upload>
    </div>
</template>

<script setup>
import { ref, reactive, getCurrentInstance, nextTick } from 'vue';
import { useRoute, useRouter } from 'vue-router';
const { proxy } = getCurrentInstance();
const route = useRoute();
const router = useRouter();

const props = defineProps({
    imageUrlPrefix: {
        type: String
    },
    modelValue: {
        type: Object,
        default: null
    }
})

// 文件
const localFile = ref()

const emit = defineEmits();
const uploadImage = async (file) => {
    file = file.file
    let img = new FileReader();
    img.readAsDataURL(file);
    img.onload = ({ target }) => {
        localFile.value = target.result
    };
    emit("update:modelValue", file)
}
</script>

<style lang="scss">
.cover-upload {
    .cover-upload-btn {
        background: #f7f4f4;
        width: 150px;
        height: 150px;
        display: flex;
        align-items: center;
        justify-content: center;

        .iconfont {
            font-size: 50px;
            color: #cecaca;
        }

        img {
            width: 100%;
            height: 100%;
        }
    }
}
</style>
